Re: [PATCH v3 09/13] powerpc: extend execmem_params for kprobes allocations

2023-09-23 Thread Mike Rapoport
Hi Christophe, On Fri, Sep 22, 2023 at 10:32:46AM +, Christophe Leroy wrote: > Hi Mike, > > Le 18/09/2023 à 09:29, Mike Rapoport a écrit : > > From: "Mike Rapoport (IBM)" > > > > powerpc overrides kprobes::alloc_insn_page() to remove writable > > permissions when STRICT_MODULE_RWX is on. >

Re: [PATCH v3 09/13] powerpc: extend execmem_params for kprobes allocations

2023-09-23 Thread Mike Rapoport
On Thu, Sep 21, 2023 at 03:30:46PM -0700, Song Liu wrote: > On Mon, Sep 18, 2023 at 12:31 AM Mike Rapoport wrote: > > > [...] > > @@ -135,5 +138,13 @@ struct execmem_params __init *execmem_arch_params(void) > > > > range->pgprot = prot; > > > > + execmem_params.ranges[EXECMEM_KPROBES

Re: [PATCH v3 09/13] powerpc: extend execmem_params for kprobes allocations

2023-09-22 Thread Christophe Leroy
Hi Mike, Le 18/09/2023 à 09:29, Mike Rapoport a écrit : > From: "Mike Rapoport (IBM)" > > powerpc overrides kprobes::alloc_insn_page() to remove writable > permissions when STRICT_MODULE_RWX is on. > > Add definition of EXECMEM_KRPOBES to execmem_params to allow using the > generic kprobes::all

Re: [PATCH v3 09/13] powerpc: extend execmem_params for kprobes allocations

2023-09-21 Thread Song Liu
On Mon, Sep 18, 2023 at 12:31 AM Mike Rapoport wrote: > [...] > @@ -135,5 +138,13 @@ struct execmem_params __init *execmem_arch_params(void) > > range->pgprot = prot; > > + execmem_params.ranges[EXECMEM_KPROBES].start = VMALLOC_START; > + execmem_params.ranges[EXECMEM_KPROBES].

[PATCH v3 09/13] powerpc: extend execmem_params for kprobes allocations

2023-09-18 Thread Mike Rapoport
From: "Mike Rapoport (IBM)" powerpc overrides kprobes::alloc_insn_page() to remove writable permissions when STRICT_MODULE_RWX is on. Add definition of EXECMEM_KRPOBES to execmem_params to allow using the generic kprobes::alloc_insn_page() with the desired permissions. As powerpc uses breakpoin